Camera optical lens including six lenses of +−−−+− or +−−++− refractive powers

ABSTRACT

The present disclosure relates to the field of optical lenses and provides a camera optical lens. The camera optical lens includes, from an object side to an image side: a first lens; a second lens having a negative refractive power; a third lens having a negative refractive power; a fourth lens; a fifth lens; and a sixth lens. The camera optical lens satisfies following conditions: 1.10≤f1/f≤3.00; and −20.00≤R11/d11≤−11.00. The camera optical lens can achieve a high imaging performance while obtaining a low TTL.

TECHNICAL FIELD

The present disclosure relates to the field of optical lens, and more particularly, to a camera optical lens suitable for handheld terminal devices, such as smart phones or digital cameras, and imaging devices, such as monitors or PC lenses.

BACKGROUND

With the emergence of smart phones in recent years, the demand for miniature camera lens is increasing day by day, but in general the photosensitive devices of camera lens are nothing more than Charge Coupled Device (CCD) or Complementary Metal-Oxide Semiconductor Sensor (CMOS sensor), and as the progress of the semiconductor manufacturing technology makes the pixel size of the photosensitive devices become smaller, plus the current development trend of electronic products towards better functions and thinner and smaller dimensions, miniature camera lenses with good imaging quality therefore have become a mainstream in the market. In order to obtain better imaging quality, the lens that is traditionally equipped in mobile phone cameras adopts a three-piece or four-piece lens structure. Also, with the development of technology and the increase of the diverse demands of users, and as the pixel area of photosensitive devices is becoming smaller and smaller and the requirement of the system on the imaging quality is improving constantly, the five-piece, six-piece and seven-piece lens structures gradually appear in lens designs. There is an urgent need for ultra-thin, wide-angle camera lenses with good optical characteristics and fully corrected chromatic aberration.

BRIEF DESCRIPTION OF DRAWINGS

Many aspects of the exemplary embodiment can be better understood with reference to the following drawings. The components in the drawings are not necessarily drawn to scale, the emphasis instead being placed upon clearly illustrating the principles of the present disclosure. Moreover, in the drawings, like reference numerals designate corresponding parts throughout the several views.

FIG. 1 is a schematic diagram of a structure of a camera optical lens in accordance with Embodiment 1 of the present disclosure;

FIG. 2 is a schematic diagram of a longitudinal aberration of the camera optical lens shown in FIG. 1;

FIG. 3 is a schematic diagram of a lateral color of the camera optical lens shown in FIG. 1;

FIG. 4 is a schematic diagram of a field curvature and a distortion of the camera optical lens shown in FIG. 1;

FIG. 5 is a schematic diagram of a structure of a camera optical lens in accordance with Embodiment 2 of the present disclosure;

FIG. 6 is a schematic diagram of a longitudinal aberration of the camera optical lens shown in FIG. 5;

FIG. 7 is a schematic diagram of a lateral color of the camera optical lens shown in FIG. 5;

FIG. 8 is a schematic diagram of a field curvature and a distortion of the camera optical lens shown in FIG. 5;

FIG. 9 is a schematic diagram of a structure of a camera optical lens in accordance with Embodiment 3 of the present disclosure;

FIG. 10 is a schematic diagram of a longitudinal aberration of the camera optical lens shown in FIG. 9;

FIG. 11 is a schematic diagram of a lateral color of the camera optical lens shown in FIG. 9; and

FIG. 12 is a schematic diagram of a field curvature and a distortion of the camera optical lens shown in FIG. 9.

DESCRIPTION OF EMBODIMENTS

The present disclosure will hereinafter be described in detail with reference to several exemplary embodiments. To make the technical problems to be solved, technical solutions and beneficial effects of the present disclosure more apparent, the present disclosure is described in further detail together with the figure and the embodiments. It should be understood the specific embodiments described hereby is only to explain the disclosure, not intended to limit the disclosure.

Embodiment 1

Referring to FIG. 1, the present disclosure provides a camera optical lens 10. FIG. 1 shows the camera optical lens 10 according to Embodiment 1 of the present disclosure. The camera optical lens 10 includes 6 lenses. Specifically, the camera optical lens 10 includes, from an object side to an image side, an aperture S1, a first lens L1, a second lens L2, a third lens L3, a fourth lens L4, a fifth lens L5, and a sixth lens L6. An optical element such as an optical filter GF can be arranged between the sixth lens L6 and an image plane Si.

The first lens L1, the second lens L2, the third lens L3, the fourth lens L4, the fifth lens L5 and the sixth lens L6 are all made of a plastic material.

The second lens L2 has a negative refractive power, and the third lens L3 has a negative refractive power.

Here, a focal length of the camera optical lens 10 is defined as f, and a focal length of the first lens L1 is defined as f1. The camera optical lens 10 should satisfy a condition of 1.10≤f1/f≤3.00, which specifies a ratio of the focal length f1 of the first lens L1 and the focal length f of the camera optical lens 10. If the lower limit of the specified value is exceeded, although it would facilitate development of ultra-thin lenses, the positive refractive power of the first lens L1 will be too strong, and thus it is difficult to correct the problem like an aberration and it is also unfavorable for development of wide-angle lenses. On the contrary, if the upper limit of the specified value is exceeded, the positive refractive power of the first lens L1 would become too weak, and it is then difficult to develop ultra-thin lenses. Preferably, 1.10≤f1/f≤2.73.

A curvature radius of an object side surface of the sixth lens L6 is defined as R11, and an on-axis thickness of the sixth lens L6 is defined as d11. The camera optical lens 10 further satisfies a condition of −20.00≤R11/d11≤−11.00, which specifies a shape of the sixth lens L6. Out of this range, a development towards ultra-thin and wide-angle lenses would make it difficult to correct the problem of the aberration. Preferably, −20≤R11/d11≤−11.50.

A total optical length from an object side surface of the first lens L1 to an image plane of the camera optical lens 10 along an optic axis is defined as TTL. When the focal length of the camera optical lens, the focal length of the first lens, the curvature radius of the object side surface of the sixth lens and the on-axis thickness of the sixth lens satisfy the above conditions, the camera optical lens will have the advantage of high performance and satisfy the design requirement of a low TTL.

In this embodiment, the object side surface of the first lens L1 is convex in a paraxial region, an image side surface of the first lens L1 is concave in the paraxial region, and the first lens L2 has a positive refractive power.

A curvature radius of the object side surface of the first lens L1 is defined as R1, and a curvature radius of the image side surface of the first lens L1 is defined as R2. The camera optical lens 10 further satisfies a condition of −10.46≤(R1+R2)/(R1−R2)≤−1.53. This can reasonably control a shape of the first lens L1 in such a manner that the first lens L1 can effectively correct a spherical aberration of the camera optical lens. Preferably, −6.54≤(R1+R2)/(R1−R2)≤−1.91.

An on-axis thickness of the first lens L1 is defined as d1. The camera optical lens 10 further satisfies a condition of 0.06≤d1/TTL≤0.20. This facilitates achieving ultra-thin lenses. Preferably, 0.10≤d1/TTL≤0.16.

In this embodiment, an object side surface of the second lens L2 is convex in the paraxial region, and an object side surface of the second lens L2 is concave in the paraxial region.

A focal length of the second lens L2 is f2. The camera optical lens 10 further satisfies a condition of −2.42E+07≤f2/f≤−5.24. By controlling the negative refractive power of the second lens L2 within the reasonable range, correction of the aberration of the optical system can be facilitated. Preferably, −1.51E+07≤f2/f≤−6.55.

A curvature radius of the object side surface of the second lens L2 is defined as R3, and a curvature radius of the image side surface of the second lens L2 is defined as R4. The camera optical lens 10 further satisfies a condition of 5.81≤(R3+R4)/(R3−R4)≤73.42. This can reasonably control a shape of the second lens L2. Out of this range, a development towards ultra-thin and wide-angle lenses would make it difficult to correct the problem of the aberration. Preferably, 9.29≤(R3+R4)/(R3−R4)≤58.73.

An on-axis thickness of the second lens L2 is defined as d3. The camera optical lens 10 further satisfies a condition of 0.03≤d3/TTL≤0.09. This facilitates achieving ultra-thin lenses. Preferably, 0.04≤d3/TTL≤0.07.

In this embodiment, an object side surface of the third lens L3 is convex in the paraxial region, and an image side surface of the third lens L3 is concave in the paraxial region.

A focal length of the third lens L3 is f3. The camera optical lens 10 further satisfies a condition of −1.49E+07≤f3/f≤−2.80E+05. When the condition is satisfied, the field curvature of the system can be balanced for further improving the image quality. Preferably, −9.31E+06≤f3/f≤−3.50E+05.

A curvature radius of the object side surface of the third lens L3 is defined as R5, and a curvature radius of the image side surface of the third lens L3 is defined as R6. The camera optical lens 10 further satisfies a condition of 73.39≤(R5+R6)/(R5−R6)≤956.06. This can effectively control a shape of the third lens L3, thereby facilitating shaping of the third lens L3 and avoiding bad shaping and generation of stress due to the overly large surface curvature of the third lens L3. Preferably, 117.42≤(R5+R6)/(R5−R6)≤764.85.

An on-axis thickness of the third lens L3 is defined as d5. The camera optical lens 10 further satisfies a condition of 0.04≤d5/TTL≤0.12. This facilitates achieving ultra-thin lenses. Preferably, 0.06≤d5/TTL≤0.10.

In this embodiment, an object side surface of the fourth lens L4 is convex in the paraxial region, and an image side surface of the fourth lens L4 is concave in the paraxial region.

A focal length of the fourth lens L4 is f4. The camera optical lens 10 further satisfies a condition of −14.88≤f4/f≤11.93. The appropriate distribution of the refractive power leads to a better imaging quality and a lower sensitivity. Preferably, −9.30≤f4/f≤9.54.

A curvature radius of the object side surface of the fourth lens L4 is defined as R7, and a curvature radius of the image side surface of the fourth lens L4 is defined as R8. The camera optical lens 10 further satisfies a condition of −7.77≤(R7+R8)/(R7−R8)≤3.49, which specifies a shape of the fourth lens L4. Out of this range, a development towards ultra-thin and wide-angle lenses would make it difficult to correct the problem like an off-axis aberration. Preferably, −4.86≤(R7+R8)/(R7−R8)≤2.79.

An on-axis thickness of the fourth lens L4 is defined as d7. The camera optical lens 10 further satisfies a condition of 0.03≤d7/TTL≤0.09. This facilitates achieving ultra-thin lenses. Preferably, 0.04≤d7/TTL≤0.07.

In this embodiment, an object side surface of the fifth lens L5 is convex in the paraxial region, an image side surface of the fifth lens L5 is convex in the paraxial region, and the fifth lens L5 has a positive refractive power.

A focal length of the fifth lens L5 is f5. The camera optical lens 10 further satisfies a condition of 0.39≤f5/f≤1.22. This can effectively make a light angle of the camera lens gentle and reduce the tolerance sensitivity. Preferably, 0.62≤f5/f≤0.98.

A curvature radius of the object side surface of the fifth lens L5 is defined as R9, and a curvature radius of the image side surface of the fifth lens L5 is defined as R10. The camera optical lens 10 further satisfies a condition of 0.39≤(R9+R10)/(R9−R10)≤1.17, which specifies a shape of the fifth lens L5. Out of this range, a development towards ultra-thin and wide-angle lenses would make it difficult to correct the problem like an off-axis aberration. Preferably, 0.62≤(R9+R10)/(R9−R10)≤0.94.

An on-axis thickness of the fifth lens L5 is defined as d9. The camera optical lens 10 further satisfies a condition of 0.05≤d9/TTL≤0.18. This facilitates achieving ultra-thin lenses. Preferably, 0.09≤d9/TTL≤0.14.

In this embodiment, an object side surface of the sixth lens L6 is concave in the paraxial region, an image side surface of the sixth lens L6 is concave in the paraxial region, and the sixth lens L6 has a negative refractive power.

A focal length of the sixth lens L6 is f6. The camera optical lens 10 further satisfies a condition of −1.57≤f6/f≤−0.43. The appropriate distribution of the refractive power leads to a better imaging quality and a lower sensitivity. Preferably, −0.98≤f6/f≤−0.53.

A curvature radius of the image side surface of the sixth lens L6 is defined as R12. The camera optical lens 10 further satisfies a condition of 0.34≤(R11+R12)/(R11−R12)≤1.15, which specifies a shape of the sixth lens L6. Out of this range, a development towards ultra-thin and wide-angle lenses would make it difficult to correct the problem like an off-axis aberration. Preferably, 0.55≤(R11+R12)/(R11−R12)≤0.92.

The camera optical lens 10 further satisfies a condition of 0.05≤d11/TTL≤0.22. This facilitates achieving ultra-thin lenses. Preferably, 0.08≤d11/TTL≤0.18.

In this embodiment, a combined focal length of the first lens L1 and the second lens L2 is f12. The camera optical lens 10 further satisfies a condition of 0.60≤f12/f≤3.54. This can eliminate the aberration and distortion of the camera optical lens while suppressing a back focal length of the camera optical lens, thereby maintaining miniaturization of the camera lens system. Preferably, 0.96≤f12/f≤2.83.

In this embodiment, the total optical length TTL of the camera optical lens 10 is smaller than or equal to 5.00 mm, which is beneficial for achieving ultra-thin lenses. Preferably, the total optical length TTL of the camera optical lens 10 is smaller than or equal to 4.77 mm.

In this embodiment, the camera optical lens 10 has a large F number, which is smaller than or equal to 1.98. The camera optical lens 10 has a better imaging performance. Preferably, the F number of the camera optical lens 10 is smaller than or equal to 1.94.

With such design, the total optical length TTL of the camera optical lens 10 can be made as short as possible, and thus the miniaturization characteristics can be maintained.

In the following, examples will be used to describe the camera optical lens 10 of the present disclosure. The symbols recorded in each example will be described as follows. The focal length, on-axis distance, curvature radius, on-axis thickness, inflexion point position, and arrest point position are all in units of mm.

TTL: Optical length (the total optical length from the object side surface of the first lens to the image plane of the camera optical lens along the optic axis) in mm.

Preferably, inflexion points and/or arrest points can be arranged on the object side surface and/or image side surface of the lens, so as to satisfy the demand for the high quality imaging. The description below can be referred to for specific implementations.

The design information of the camera optical lens 10 in Embodiment 1 of the present disclosure is shown in Tables 1 and 2.

TABLE 1 R d nd vd S1 ∞ d0 = −0.362 R1 1.475 d1 = 0.601 nd1 1.5462 v1 55.95 R2 3.666 d2 = 0.070 R3 3.048 d3 = 0.235 nd2 1.6682 v2 20.40 R4 2.570 d4 = 0.343 R5 41.580 d5 = 0.366 nd3 1.5462 v3 55.95 R6 41.450 d6 = 0.115 R7 35.831 d7 = 0.281 nd4 1.6682 v4 20.40 R8 11.505 d8 = 0.241 R9 14.255 d9 = 0.494 nd5 1.5462 v5 55.95 R10 −1.750 d10 =  0.317 R11 −10.610 d11 =  0.531 nd6 1.5142 v6 56.26 R12 1.408 d12 =  0.350 R13 ∞ d13 =  0.210 ndg 1.5168 vg 64.17 R14 ∞ d14 =  0.357

In the table, meanings of various symbols will be described as follows.

S1: aperture;

R: curvature radius of an optical surface, a central curvature radius for a lens;

R1: curvature radius of the object side surface of the first lens L1;

R2: curvature radius of the image side surface of the first lens L1;

R3: curvature radius of the object side surface of the second lens L2;

R4: curvature radius of the image side surface of the second lens L2;

R5: curvature radius of the object side surface of the third lens L3;

R6: curvature radius of the image side surface of the third lens L3;

R7: curvature radius of the object side surface of the fourth lens L4;

R8: curvature radius of the image side surface of the fourth lens L4;

R9: curvature radius of the object side surface of the fifth lens L5;

R10: curvature radius of the image side surface of the fifth lens L5;

R11: curvature radius of the object side surface of the sixth lens L6;

R12: curvature radius of the image side surface of the sixth lens L6;

R13: curvature radius of an object side surface of the optical filter GF;

R14: curvature radius of an image side surface of the optical filter GF;

d: on-axis thickness of a lens and an on-axis distance between lenses;

d0: on-axis distance from the aperture S1 to the object side surface of the first lens L1;

d1: on-axis thickness of the first lens L1;

d2: on-axis distance from the image side surface of the first lens L1 to the object side surface of the second lens L2;

d3: on-axis thickness of the second lens L2;

d4: on-axis distance from the image side surface of the second lens L2 to the object side surface of the third lens L3;

d5: on-axis thickness of the third lens L3;

d6: on-axis distance from the image side surface of the third lens L3 to the object side surface of the fourth lens L4;

d7: on-axis thickness of the fourth lens L4;

d8: on-axis distance from the image side surface of the fourth lens L4 to the object side surface of the fifth lens L5;

d9: on-axis thickness of the fifth lens L5;

d10: on-axis distance from the image side surface of the fifth lens L5 to the object side surface of the sixth lens L6;

d11: on-axis thickness of the sixth lens L6;

d12: on-axis distance from the image side surface of the sixth lens L6 to the object side surface of the optical filter GF;

d13: on-axis thickness of the optical filter GF;

d14: on-axis distance from the image side surface of the optical filter GF to the image plane;

nd: refractive index of d line;

nd1: refractive index of d line of the first lens L1;

nd2: refractive index of d line of the second lens L2;

nd3: refractive index of d line of the third lens L3;

nd4: refractive index of d line of the fourth lens L4;

nd5: refractive index of d line of the fifth lens L5;

nd6: refractive index of d line of the sixth lens L6;

ndg: refractive index of d line of the optical filter GF;

vd: abbe number;

v1: abbe number of the first lens L1;

v2: abbe number of the second lens L2;

v3: abbe number of the third lens L3;

v4: abbe number of the fourth lens L4;

v5: abbe number of the fifth lens L5;

v6: abbe number of the sixth lens L6;

vg: abbe number of the optical filter GF.

Table 2 shows aspherical surface data of the camera optical lens 10 in Embodiment 1 of the present disclosure.

TABLE 2 Conic Aspherical surface coefficients coefficient k A4 A6 A8 R1 1.6429E−02 −0.008830139 0.046684942 −0.139909775 R2 −1.3486E+01 −0.229318918 0.4282705 −0.476994711 R3 −5.5691E+00 −0.334274485 0.574573739 −0.42535143 R4 1.3246E−01 −0.182778529 0.450690293 −0.782030125 R5 −2.4639E+03 −0.131930758 −0.056599412 0.284066831 R6 −5.1101E+03 −0.257289546 −0.216693724 1.203267856 R7 −1.8605E+03 −0.430600618 0.130995575 0.159009242 R8 3.8947E+01 −0.323345393 0.031621538 0.343495315 R9 9.0261E+01 −0.01587487 −0.153985688 −0.059134765 R10 −6.5119E+00 −0.018808168 −0.022387914 −0.096095537 R11 2.0892E+01 −0.306554457 0.135063007 0.003472994 R12 −5.8842E+00 −0.182665585 0.118070238 −0.050585734 Aspherical surface coefficients A10 A12 A14 A16 R1 0.275647766 −0.332531097 0.220241873 −0.064842955 R2 0.329758619 −0.146290344 0.051533331 −0.021522292 R3 0.034023259 0.196207521 −0.087443985 −0.012545931 R4 1.547107532 −2.193787325 1.786698909 −0.564384916 R5 −0.958004217 1.481669939 −1.210901852 0.425875438 R6 −2.451029573 2.440640555 −1.190735865 0.20989824 R7 0.533324412 −1.902256565 1.87251247 −0.634788538 R8 −0.408206348 0.184535426 −0.029211201 0.001697974 R9 0.333606133 −0.332062858 0.140159831 −0.021607415 R10 0.149722373 −0.077197675 0.017417361 −0.00147034 R11 −0.015140928 4.15E−03 −4.73E−04 2.02E−05 R12 0.01397533 −2.43E−03 2.38E−04 −9.84E−06

Here, K is a conic coefficient, and A4, A6, A8, A10, A12, A14 and A16 are aspheric surface coefficients.

IH: Image Height y=(x ² /R)/[1+{1−(k+1)(x ² /R ²)}^(1/2)]+A4x ⁴ +A6x ⁶ +A8x ⁸ +A10x ¹⁰ +A12x ¹² +A14x ¹⁴ +A16x ¹⁶  (1)

For convenience, an aspheric surface of each lens surface uses the aspheric surfaces shown in the above formula (1). However, the present disclosure is not limited to the aspherical polynomials form shown in the formula (1).

Table 3 and Table 4 show design data of inflexion points and arrest points of respective lens in the camera optical lens 10 according to Embodiment 1 of the present disclosure. P1R1 and P1R2 represent the object side surface and the image side surface of the first lens L1, P2R1 and P2R2 represent the object side surface and the image side surface of the second lens L2, P3R1 and P3R2 represent the object side surface and the image side surface of the third lens L3, P4R1 and P4R2 represent the object side surface and the image side surface of the fourth lens L4, P5R1 and P5R2 represent the object side surface and the image side surface of the fifth lens L5, and P6R1 and P6R2 represent the object side surface and the image side surface of the sixth lens L6. The data in the column named “inflexion point position” refers to vertical distances from inflexion points arranged on each lens surface to the optic axis of the camera optical lens 10. The data in the column named “arrest point position” refers to vertical distances from arrest points arranged on each lens surface to the optic axis of the camera optical lens 10.

TABLE 3 Number of Inflexion Inflexion Inflexion inflexion point point point points position 1 position 2 position 3 P1R1 0 0 0 0 P1R2 3 0.465 0.575 0.745 P2R1 2 0.405 0.485 0 P2R2 0 0 0 0 P3R1 1 0.125 0 0 P3R2 1 0.095 0 0 P4R1 1 0.075 0 0 P4R2 2 0.155 1.095 0 P5R1 2 0.335 1.245 0 P5R2 1 1.075 0 0 P6R1 2 1.125 1.985 0 P6R2 1 0.495 0 0

TABLE 4 Number of Arrest point arrest points position 1 P1R1 0 0 P1R2 1 0.965 P2R1 0 0 P2R2 0 0 P3R1 1 0.205 P3R2 1 0.145 P4R1 1 0.125 P4R2 1 0.265 P5R1 1 0.505 P5R2 0 0 P6R1 0 0 P6R2 1 1.165

FIG. 2 and FIG. 3 illustrate a longitudinal aberration and a lateral color of light with wavelengths of 435.8 nm, 486.1 nm, 546.1 nm, 587.6 nm and 656.3 nm after passing the camera optical lens 10 according to Embodiment 1. FIG. 4 illustrates a field curvature and a distortion of light with a wavelength of 546.1 nm after passing the camera optical lens 10 according to Embodiment 1, in which a field curvature S is a field curvature in a sagittal direction and T is a field curvature in a meridian direction.

Table 13 shows various values of Embodiments 1, 2 and 3 and values corresponding to parameters which are specified in the above conditions.

As shown in Table 13, Embodiment 1 satisfies the above conditions.

In this embodiment, the entrance pupil diameter of the camera optical lens is 1.9858 mm. The image height of 1.0H is 3.126 mm. The FOV (field of view) is 78.97°. Thus, the camera optical lens has a wide-angle and is ultra-thin. Its on-axis and off-axis chromatic aberrations are fully corrected, thereby achieving excellent optical characteristics.

Embodiment 2

Embodiment 2 is basically the same as Embodiment 1 and involves symbols having the same meanings as Embodiment 1, and only differences therebetween will be described in the following.

Table 5 and Table 6 show design data of a camera optical lens 20 in Embodiment 2 of the present disclosure.

TABLE 5 R d nd vd S1 ∞ d0 = −0.360 R1 1.485 d1 = 0.590 nd1 1.5462 v1 55.95 R2 3.780 d2 = 0.070 R3 2.949 d3 = 0.228 nd2 1.6682 v2 20.40 R4 2.481 d4 = 0.338 R5 22.664 d5 = 0.329 nd3 1.5462 v3 55.95 R6 22.548 d6 = 0.123 R7 27.581 d7 = 0.281 nd4 1.6682 v4 20.40 R8 10.990 d8 = 0.264 R9 14.374 d9 = 0.516 nd5 1.5462 v5 55.95 R10 −1.832 d10 =  0.297 R11 −8.130 d11 =  0.677 nd6 1.5142 v6 56.26 R12 1.496 d12 =  0.350 R13 ∞ d13 =  0.210 ndg 1.5168 vg 64.17 R14 ∞ d14 =  0.274

Table 6 shows aspherical surface data of each lens of the camera optical lens 20 in Embodiment 2 of the present disclosure.

TABLE 6 Conic coefficient Aspherical surface coefficients k A4 A6 A8 R1 2.14E−02 −0.007433443 0.047021701 −0.137561829 R2 −1.21E+01 −0.223474598 0.427355696 −0.483082967 R3 −3.77E+00 −0.336255268 0.558694826 −0.418065871 R4 −3.15E−01 −0.187200817 0.437466701 −0.774684002 R5 −1.13E+03 −0.116260677 −0.065561534 0.273428086 R6 −1.01E+06 −0.241577768 −0.229817658 1.19522481 R7 −5.55E+06 −0.45037675 0.126469428 0.152353075 R8 1.63E+01 −0.327907633 0.026511109 0.344828656 R9 9.11E+01 −0.0130704 −0.150405617 −0.059835343 R10 −4.05E+00 −0.018111425 −0.021023115 −0.095992201 R11 1.38E+01 −0.304383567 0.134825139 0.003482849 R12 −4.68E+00 −0.18261824 0.117618934 −0.050436094 Aspherical surface coefficients A10 A12 A14 A16 R1 0.27429502 −0.331729012 0.219090606 −0.06310275 R2 0.332605043 −0.139700863 0.052518332 −0.024483924 R3 0.041407308 0.19246554 −0.085297334 −0.014057738 R4 1.545519618 −2.181344516 1.756334179 −0.542122292 R5 −0.947356895 1.489634754 −1.255407633 0.46077309 R6 −2.446482698 2.440640555 −1.199097161 0.216160933 R7 0.538176469 −1.900451081 1.8554115 −0.616497945 R8 −0.408809173 0.184177568 −0.029468518 0.003477437 R9 0.333360148 −0.332050108 0.140172481 −0.021610741 R10 0.149718293 −0.07719212 0.017425018 −0.001471183 R11 −0.01515516 0.00414445 −0.000473552 2.06322E−05 R12 0.013975323 −0.002432918 0.000237314 −9.79916E−06

Table 7 and Table 8 show design data of inflexion points and arrest points of respective lens in the camera optical lens 20 according to Embodiment 2 of the present disclosure.

TABLE 7 Number of Inflexion Inflexion Inflexion inflexion point point point points position 1 position 2 position 3 P1R1 0 0 0 0 P1R2 1 0.835 0 0 P2R1 2 0.435 0.475 0 P2R2 0 0 0 0 P3R1 1 0.175 0 0 P3R2 1 0.045 0 0 P4R1 1 0.025 0 0 P4R2 2 0.155 1.065 0 P5R1 3 0.335 1.245 1.455 P5R2 1 1.075 0 0 P6R1 2 1.135 1.875 0 P6R2 1 0.525 0 0

TABLE 8 Number of Arrest point Arrest point arrest points position 1 position 2 P1R1 0 0 0 P1R2 0 0 0 P2R1 0 0 0 P2R2 0 0 0 P3R1 1 0.285 0 P3R2 1 0.095 0 P4R1 1 0.065 0 P4R2 2 0.265 1.205 P5R1 1 0.515 0 P5R2 1 1.635 0 P6R1 0 0 0 P6R2 1 1.255 0

FIG. 6 and FIG. 7 illustrate a longitudinal aberration and a lateral color of light with wavelengths of 435.8 nm, 486.1 nm, 546.1 nm, 587.6 nm and 656.3 nm after passing the camera optical lens 20 according to Embodiment 2. FIG. 8 illustrates a field curvature and a distortion of light with a wavelength of 546.1 nm after passing the camera optical lens 20 according to Embodiment 2.

As shown in Table 13, Embodiment 2 satisfies the above conditions.

In this embodiment, the entrance pupil diameter of the camera optical lens is 1.9789 mm. The image height of 1.0H is 3.126 mm. The FOV (field of view) is 79.22°. Thus, the camera optical lens has a wide-angle and is ultra-thin. Its on-axis and off-axis chromatic aberrations are fully corrected, thereby achieving excellent optical characteristics.

Embodiment 3

Embodiment 3 is basically the same as Embodiment 1 and involves symbols having the same meanings as Embodiment 1, and only differences therebetween will be described in the following.

Table 9 and Table 10 show design data of a camera optical lens 30 in Embodiment 3 of the present disclosure.

TABLE 9 R d nd vd S1 ∞ d0 = −0.163 R1 1.570 d1 = 0.507 nd1 1.5697 v1 37.71 R2 2.313 d2 = 0.070 R3 2.327 d3 = 0.231 nd2 1.6781 v2 19.39 R4 2.234 d4 = 0.243 R5 8.568 d5 = 0.328 nd3 1.5462 v3 55.95 R6 8.452 d6 = 0.075 R7 6.212 d7 = 0.206 nd4 1.6682 v4 20.40 R8 10.518 d8 = 0.171 R9 10.741 d9 = 0.480 nd5 1.5462 v5 55.95 R10 −1.335 d10 =  0.553 R11 −7.634 d11 =  0.391 nd6 1.5142 v6 56.26 R12 1.355 d12 =  0.350 R13 ∞ d13 =  0.210 ndg 1.5168 vg 64.17 R14 ∞ d14 =  0.164

Table 10 shows aspherical surface data of each lens of the camera optical lens 30 in Embodiment 3 of the present disclosure.

TABLE 10 Conic coefficient Aspherical surface coefficients k A4 A6 A8 R1 1.1731E−01 −0.001512904 0.036381152 −0.130359758 R2 −2.8688E+01 −0.156077517 0.427739098 −0.584983256 R3 −7.5378E+00 −0.353932938 0.50505847 −0.414498135 R4 −1.6578E+00 −0.19419232 0.509007537 −0.777740054 R5 −2.4213E+01 −0.046744953 −0.061245339 0.294432758 R6 −3.7934E+16 −0.226906704 −0.233201296 1.194619854 R7 −3.2050E+16 −0.414908419 0.134506492 0.16148961 R8 4.7713E+01 −0.305939777 0.023627872 0.342954417 R9 5.6356E+01 −0.014414814 −0.124449957 −0.064792015 R10 −4.0061E+00 −0.013725491 −0.018058114 −0.089319201 R11 1.4422E+01 −0.29571815 0.135135058 0.003209606 R12 −5.6132E+00 −0.174624246 0.116747531 −0.05003699 Aspherical surface coefficients A10 A12 A14 A16 R1 0.288993021 −0.325698303 0.236795864 −0.068764897 R2 0.232729893 −0.087817147 0.188035462 0.128060837 R3 0.001164386 0.088309477 −0.190868216 −0.149451416 R4 1.429443659 −2.266230054 1.703709484 −0.594997393 R5 −0.870670616 1.521584313 −1.299621314 0.370211399 R6 −2.438128515 2.440640555 −1.118019538 0.234839422 R7 0.577182984 −1.881748463 1.842243697 −0.590713562 R8 −0.410708812 0.183192779 −0.035072125 0.005349211 R9 0.321638486 −0.338293659 0.143330832 −0.020326596 R10 0.151219754 −0.077891107 0.017245896 −0.001505865 R11 −0.015153607 4.15E−03 −4.64E−04 2.02E−05 R12 0.013981848 −2.44E−03 2.37E−04 −9.67E−06

Table 11 and table 12 show design data of inflexion points and arrest points of respective lens in the camera optical lens 30 according to Embodiment 3 of the present disclosure.

TABLE 11 Number of Inflexion Inflexion Inflexion inflexion point point point points position 1 position 2 position 3 P1R1 0 0 0 0 P1R2 2 0.535 0.725 0 P2R1 1 0.365 0 0 P2R2 1 0.715 0 0 P3R1 1 0.415 0 0 P3R2 1 0.855 0 0 P4R1 1 0.835 0 0 P4R2 1 0.165 0 0 P5R1 1 0.385 0 0 P5R2 1 0.965 0 0 P6R1 1 1.115 0 0 P6R2 3 0.515 2.245 2.365

TABLE 12 Number of Arrest point arrest points position 1 P1R1 0 0 P1R2 0 0 P2R1 1 0.675 P2R2 0 0 P3R1 1 0.725 P3R2 0 0 P4R1 0 0 P4R2 1 0.285 P5R1 1 0.585 P5R2 0 0 P6R1 0 0 P6R2 1 1.395

FIG. 10 and FIG. 11 illustrate a longitudinal aberration and a lateral color of light with wavelengths of 435.8 nm, 486.1 nm, 546.1 nm, 587.6 nm and 656.3 nm after passing the camera optical lens 30 according to Embodiment 3. FIG. 12 illustrates field curvature and distortion of light with a wavelength of 546.1 nm after passing the camera optical lens 30 according to Embodiment 3.

Table 13 in the following lists values corresponding to the respective conditions in this embodiment in order to satisfy the above conditions. The camera optical lens according to this embodiment satisfies the above conditions.

In this embodiment, the entrance pupil diameter of the camera optical lens is 1.4592 mm. The image height of 1.0H is 2.83 mm. The FOV (field of view) is 87.60°. Thus, the camera optical lens has a wide-angle and is ultra-thin. Its on-axis and off-axis chromatic aberrations are fully corrected, thereby achieving excellent optical characteristics.

TABLE 13 Parameters Embodiment Embodiment Embodiment and conditions 1 2 3 f  3.714 3.700 2.802 f1 4.118 4.106 6.880 f2 −30.497 −29.102 −3.394E+07 f3 −3.067E+06 −2.757E+07 −1.176E+06 f4 −25.477 −27.528 22.283 f5 2.885 3.009 2.205 f6 −2.382 −2.399 −2.205  f12 4.460 4.473 6.604 FNO 1.87 1.87 1.92 f1/f 1.11 1.11 2.46 R11/d11 −19.98 −12.01 −19.52

It can be appreciated by one having ordinary skill in the art that the description above is only embodiments of the present disclosure. In practice, one having ordinary skill in the art can make various modifications to these embodiments in forms and details without departing from the spirit and scope of the present disclosure. 

What is claimed is:
 1. A camera optical lens, substantially consisting of, from an object side to an image side: a first lens; a second lens having a negative refractive power; a third lens having a negative refractive power; a fourth lens; a fifth lens; and a sixth lens, wherein the camera optical lens satisfies following conditions: 1.10≤f1/f≤3.00; and −20.00≤R11/d11≤−11.00, where f denotes a focal length of the camera optical lens; f1 denotes a focal length of the first lens; R11 denotes a curvature radius of an object side surface of the sixth lens; and d11 denotes an on-axis thickness of the sixth lens.
 2. The camera optical lens as described in claim 1, further satisfying following conditions: 1.10≤f1/f≤2.73; and −20≤R11/d11≤−11.50.
 3. The camera optical lens as described in claim 1, wherein the first lens has a positive refractive power, and comprises an object side surface being convex in a paraxial region and an image side surface being concave in the paraxial region, and the camera optical lens further satisfies following conditions: −10.46≤(R1+R2)/(R1−R2)≤−1.53; and 0.06≤d1/TTL≤0.20, where R1 denotes a curvature radius of the object side surface of the first lens; R2 denotes a curvature radius of the image side surface of the first lens; d1 denotes an on-axis thickness of the first lens; and TTL denotes a total optical length from the object side surface of the first lens to an image plane of the camera optical lens along an optic axis.
 4. The camera optical lens as described in claim 3, further satisfying following conditions: −6.54≤(R1+R2)/(R1−R2)≤−1.91; and 0.10≤d1/TTL≤0.16.
 5. The camera optical lens as described in claim 1, wherein the second lens comprises an object side surface being convex in a paraxial region and an image side surface being concave in the paraxial region, and the camera optical lens further satisfies following conditions: −2.42E+07≤f2/f≤−5.24; 5.81≤(R3+R4)/(R3−R4)≤73.42; and 0.03≤d3/TTL≤0.09, where f2 denotes a focal length of the second lens; R3 denotes a curvature radius of the object side surface of the second lens; R4 denotes a curvature radius of the image side surface of the second lens; d3 denotes an on-axis thickness of the second lens; and TTL denotes a total optical length from an object side surface of the first lens to an image plane of the camera optical lens along an optic axis.
 6. The camera optical lens as described in claim 5, further satisfying following conditions: −1.51E+07≤f2/f≤−6.55; 9.29≤(R3+R4)/(R3−R4)≤58.73; and 0.04≤d3/TTL≤0.07.
 7. The camera optical lens as described in claim 1, wherein the third lens comprises an object side surface being convex in a paraxial region and an image side surface being concave in the paraxial region, and the camera optical lens further satisfies following conditions: −1.49E+07≤f3/f≤−2.80E+05; 73.39≤(R5+R6)/(R5−R6)≤956.06; and 0.04≤d5/TTL≤0.12, where f3 denotes a focal length of the third lens; R5 denotes a curvature radius of the object side surface of the third lens; R6 denotes a curvature radius of the image side surface of the third lens; d5 denotes an on-axis thickness of the third lens; and TTL denotes a total optical length from an object side surface of the first lens to an image plane of the camera optical lens along an optic axis.
 8. The camera optical lens as described in claim 7, further satisfying following conditions: −9.31E+06≤f3/f≤−3.50E+05; 117.42≤(R5+R6)/(R5−R6)≤764.85; and 0.06≤d5/TTL≤0.10.
 9. The camera optical lens as described in claim 1, wherein the fourth lens comprises an object side surface being convex in a paraxial region and an image side surface being concave in the paraxial region, and the camera optical lens further satisfies following conditions: −14.88≤f4/f≤11.93; −7.77≤(R7+R8)/(R7−R8)≤3.49; and 0.03≤d7/TTL≤0.09, where f4 denotes a focal length of the fourth lens; R7 denotes a curvature radius of the object side surface of the fourth lens; R8 denotes a curvature radius of the image side surface of the fourth lens; d7 denotes an on-axis thickness of the fourth lens; and TTL denotes a total optical length from an object side surface of the first lens to an image plane of the camera optical lens along an optic axis.
 10. The camera optical lens as described in claim 9, further satisfying following conditions: −9.30≤f4/f≤9.54; −4.86≤(R7+R8)/(R7−R8)≤2.79; and 0.04≤d7/TTL≤0.07.
 11. The camera optical lens as described in claim 1, wherein the fifth lens has a positive refractive power, and comprises an object side surface being convex in a paraxial region and an image side surface being convex in the paraxial region, and the camera optical lens further satisfies following conditions: 0.39≤f5/f≤1.22; 0.39≤(R9+R10)/(R9−R10)≤1.17; and 0.05≤d9/TTL≤0.18, where f5 denotes a focal length of the fifth lens; R9 denotes a curvature radius of the object side surface of the fifth lens; and R10 denotes a curvature radius of the image side surface of the fifth lens; and d9 denotes an on-axis thickness of the fifth lens; and TTL denotes a total optical length from an object side surface of the first lens to an image plane of the camera optical lens along an optic axis.
 12. The camera optical lens as described in claim 11, further satisfying following conditions: 0.62≤f5/f≤0.98; 0.62≤(R9+R10)/(R9−R10)≤0.94; and 0.09≤d9/TTL≤0.14.
 13. The camera optical lens as described in claim 1, wherein the sixth lens has a negative refractive power, the object side surface of the sixth lens is concave in a paraxial region, and an image side surface of the sixth lens is concave in the paraxial region, and the camera optical lens further satisfies following conditions: −1.57≤f6/f≤−0.43; 0.34≤(R11+R12)/(R11−R12)≤1.15; and 0.05≤d11/TTL≤0.22, where f6 denotes a focal length of the sixth lens; R12 denotes a curvature radius of the image side surface of the sixth lens; and TTL denotes a total optical length from an object side surface of the first lens to an image plane of the camera optical lens along an optic axis.
 14. The camera optical lens as described in claim 13, further satisfying following conditions: −0.98≤f6/f≤−0.53; 0.55≤(R11+R12)/(R11−R12)≤0.92; and 0.08≤d11/TTL≤0.18.
 15. The camera optical lens as described in claim 1, further satisfying a following condition: 0.60≤f12/f≤3.54, where f12 denotes a combined focal length of the first lens and the second lens.
 16. The camera optical lens as described in claim 15, further satisfying a following condition: 0.96≤f12/f≤2.83.
 17. The camera optical lens as described in claim 1, wherein a total optical length TTL from an object side surface of the first lens to an image plane of the camera optical lens along an optic axis is smaller than or equal to 5.00 mm.
 18. The camera optical lens as described in claim 17, wherein the total optical length TTL of the camera optical lens is smaller than or equal to 4.77 mm.
 19. The camera optical lens as described in claim 1, wherein an F number of the camera optical lens is smaller than or equal to 1.98.
 20. The camera optical lens as described in claim 19, wherein the F number of the camera optical lens is smaller than or equal to 1.94. 